Respondent-in his 1932 income tax return-deducted from his gross income brokerage commissions paid and incurred in purchasing securities during that taxable year. Section 23(a) of the Revenue Act of 1932, 26 U.S. C.A. 23(a), allows as deductions 'All the ordinary and necessary expenses paid or incurred during the taxable year in carrying on any trade or business, including a reasonable allowance for salaries or other compensation for personal services actually rendered; ....' Respondent contends that he was
[305
U.S. 79, 81]
engaged in the 'business' of buying and selling securities and that the brokerage commissions amounted to 'compensation for personal services actually rendered' within the meaning of Section 23(a).

The Government insists that brokers' commissions in security purchases are 'expenditures, ... properly chargeable to capital account' constituting 'a part of the cost' of such property and serving only to increase respondent's loss from sales of stock under Sections 111 and 23(r) which control allowable losses on disposal of stocks.
1
Section 23(r) allows losses on stock sales to be deducted only to the extent of gains realized from such sales.
2
If respond-
[305
U.S. 79, 82]
ent was engaged in the 'business' of buying and selling securities, and the brokers' commissions were not a 'part of the cost' of the securities purchased, but were ordinary business expenses (as defined in Section 23(a )), respondent was justified in deducting the brokers' commissions from his gross income for the taxable year. However, if these commissions represent a part of the cost of the securities, respondent's right to deduct is limited by Section 23(r).

The Commissioner refused to permit the deductions beyond the extent of stock losses. His action was affirmed by the Board of Tax Appeals.
3
The Circuit Court of Appeals held the commissions deductible if respondent was engaged in the business of buying and selling securities, and remanded for a finding as to the nature of his business.
4

Article 282, Treasury Regulation 77, issued under the 1932 Act, provides that 'Commissions paid in purchasing securities are a part of the cost price of such securities.' If this regulation governs, the respondent's contention cannot be sustained.

Regulations promulgated under the 1916 income tax law, 39 Stat. 756, treated commissions in security purchases as a part of the securities' cost and not as ordinary expense deductions.
5
This interpretation has consistently reappeared in all regulations under succeeding tax statutes.
6
In the period since 1916 statutes have from time to time altered allowable deductions, but it is significant that Congress
[305
U.S. 79, 83]
substantially retained the original taxing provisions on which these regulations have rested.

Treasury regulations and interpretations long continued without substantial change, applying to unamended or substantially reenacted statutes, are deemed to have received congressional approval and have the effect of law.
7

There has been tacit, if not express judicial approval for the administrative treatment of commissions as an element of the cost of securities. In Hutton v. Commissioner, 5 Cir., 39 F.2d 459, 460, the Circuit Court of Appeals recognized that 'It has long been a settled rule of the Treasury Department that commissions paid in purchasing securities are a capital expenditure as part of the cost price of the securities.'

In recognition of this administrative regulation, it has been said here that '... commissions (paid for marketing bonds) do not differ from brokerage commissions paid upon the purchase or sale of property. The regulations have consistently treated such commissions, not as items of current expense, but as additions to the cost of the property or deductions from the proceeds of sale, in arriving at net capital profit or loss for purposes of computing the tax.'